package com.iwayin.core.utils;

import java.util.Hashtable;
import java.util.Locale;
import java.util.Map;
import java.util.ResourceBundle;


public class Locales {
	// current属性，由于此属性只做赋值操作，不做取值操作，因此没有get方法
	private Locale current;
	private Map<String, Locale> locales;
	
	private final static Locale DEFAULT_LOCALE = Locale.ENGLISH;
    
    public final static String IETF_SEPARATOR = "-";  
    
    public final static String SEPARATOR = "_";  
    
    public final static String EMPTY_STRING = ""; 

	public void setCurrent(Locale cur) {
		this.current = cur;
	}

	public Map<String, Locale> getLocales() {

		Map<String, Locale> locales = new Hashtable<String, Locale>();

		ResourceBundle bundle = ResourceBundle.getBundle("messageResource",
				current);

		locales.put(bundle.getString("usen"), Locale.US);

		locales.put(bundle.getString("zhcn"), Locale.CHINA);
		

		return locales;
	}
	
	public static Locale langAndCountryToLocale(String language, String country){
		return new Locale(language,country);
	}
	public static Locale toLocale( String language )
    {
        if( !StringUtil.isNotEmpty( language ) )
        {
            return langToLocale( language, SEPARATOR );
        }
        return DEFAULT_LOCALE;
    }
	 public static Locale langToLocale( String lang , String separator )
     {
           if( StringUtil.isNotEmpty(lang) )
           { 
                return DEFAULT_LOCALE;
           }
            String language = EMPTY_STRING;
            String country =  EMPTY_STRING;
            String variant =  EMPTY_STRING;

            int i1 = lang.indexOf( separator );
            if ( i1 < 0 )
            {
                language = lang;
            } else 
            {
                language = lang.substring(0, i1);
                ++i1;
                int i2 = lang.indexOf( separator, i1);
                if (i2 < 0) 
                {
                    country = lang.substring(i1);
                } else 
                {
                    country = lang.substring(i1, i2);
                    variant = lang.substring(i2+1);
                }
            }
            
            if(language.length() == 2)
            {
               language = language.toLowerCase();
            }else 
            {
              language = EMPTY_STRING;
            }
            
            if(country.length() == 2)
            {
               country = country.toUpperCase();
            }else 
            {
              country = EMPTY_STRING;
            }
            
            if( (variant.length() > 0) && 
                ((language.length() == 2) ||(country.length() == 2)) )
            {
               variant = variant.toUpperCase();
            }else
            {
                variant = EMPTY_STRING;
            }
                 
            return new Locale(language, country, variant );
        }
	

}
